Former Owner
- N. Pauli1
- Nicholas B. Scheetz1
- P. Pigeot1
- Parroco di Taviano, Luigi Bruno, active 20th century1
- Paul Louis Feiss1
- Peter Le Neve1
- Petrus Hofstede1
- Philadelphia Rare Books & Manuscripts Company1
- Philip Hofer1
- Philip van Alfen1
- Phillip J. Pirages Fine Books & Manuscripts1
- Pius XI1
- Québriac family1
- Richard Blount1
- Robert Charles Winthrop1
- Rudolf Busch1
- Rush Hawkins1
- Saluti, Tomasso, active 20th century1
- Sandbergs Bokhandel1
- Sir Godfrey Webster1